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Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat transfer by radiation from 1.00 ${m}^{2}$ of $1200^{\circ} {C}$ fresh lava into $30.0^{\circ} {C}$ surroundings,assuming lava's emissivity is $1.00 .$

$Q / t=2.6645 * 10^{5} j / s$

Physics 101 Mechanics

Chapter 14

Heat and Heat Transfer Methods

Thermal Properties of Matter

Rutgers, The State University of New Jersey

Hope College

University of Sheffield

McMaster University

Lectures

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So we're going to use the formula. He transfer rate by black body radiation formula A sigma, eh, Absalon? T power for minus T power for this is 22 T. What? Save my Steven Boozman Constant, which is 5.67 times to empower. Negative 10 power negative. Eight 80 eyes one Embassy beauties won temperature difference. Now we must convert all the temperature's too Kelvin. So one about 1200 plus 2 73 It's 14 73 to the fore minus final temperature or the temperature of surrounding these 30 degree Celsius. So 30 plus 2 70 three's +303 to the fore. Now let's calculate this. 1473 to the full Right this 303 24 times by 0.67 Good bye Bye. 10. Power eight. The answer here will be 2.66 So I was 10. Cole five. What So on? The values in the question are at most three significant tickets. So we're going to keep on the three significant tickets

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